JP6456274B2 - Extension system and extension method - Google Patents

Description

  The present invention relates to a spreading system and a spreading method, and more particularly, to replenishing a missing part caused by a sheet material defect.

  An operator inspects the sheet material before spreading, and if there is a defect, it is marked with tape or the like. Disadvantages include not only scratches on the sheet material, but also irregularities in the texture of the sheet material, dirt, unraveling, etc., and there are defects that are inappropriate for use as parts.

  The sheet material is laminated into a plurality of layers by a spreader to form a laminate. In this specification, one laminated body is called a laminated body for one time. Data for cutting a part from the laminated body with a cutting machine is marking data. The marking data represents the contour and arrangement of the part, and the cutting head of the cutting machine cuts the laminated body along the marking data. In this way, a group of stacked parts can be cut out, and the operator takes out the parts from the stacked body for one time and uses it in a subsequent process such as sewing.

  If the sheet material has defects, missing parts will occur. On the other hand, Patent Document 1 (JPH02-169760) proposes to add and stack one sheet material when a defect of the sheet material occurs. In Patent Document 1, the arrangement of the additional sheet material is devised to minimize the waste in the longitudinal direction of the sheet material. However, the waste in the width direction of the sheet material is still large. In addition, when there are a plurality of defects in a single layered product, a plurality of sheet materials are added and laminated. Since the area of the additional sheet material is minimized, the additional sheet material ends in the middle of the laminate. For this reason, a level | step difference arises in the inside of a laminated body, and a cutting precision may be influenced. Furthermore, incompletely shaped parts other than the missing parts occur, so it is necessary to separate them from regular parts. Moreover, since a sheet material is added every time a missing part occurs, work efficiency is poor.

  Patent Document 2 (JP2001-519723) proposes to generate marking data so as to avoid the defects of the sheet material. However, when a plurality of sheet materials are laminated, defects may occur at a plurality of locations, and it is difficult to generate marking data so as to avoid all of these.

JPH02-169760 JP2001-519723

  An object of the present invention is to make up for missing parts by additionally extending a sheet material having a minimum length.

The spread system of this invention is
Recognizing means for controlling the spreading means by the controller, laminating a plurality of sheet materials, and recognizing the defects of the laminated sheet materials
A discrimination means for comparing the marking data and the position of the defect recognized by the recognition means, and determining a part including the defect as a missing part,
Storage means for storing data for identifying missing parts and the number of missing parts;
An additional marking data generation means for generating additional marking data marking additional parts corresponding to the stored missing parts;
The controller is configured to add and extend at least one sheet material having a length corresponding to the additional marking data to the extending means separately from the laminated sheet materials.

In the method of extending the invention,
By controlling the spreading means with a controller, multiple layers of sheet material are laminated,
Recognizing a defect of the sheet material to be laminated by a recognition means;
Comparing the position of the recognized defect with the marking data, and determining the part including the defect as a missing part by the determining means;
Storing the data for specifying the missing parts and the number thereof by the storage means;
A step of generating additional marking data by marking additional parts corresponding to the stored insufficient parts by the additional marking data generating means;
In addition to controlling the extending means by the controller, a step of adding and extending at least one sheet material having a length corresponding to the additional marking data is performed separately from the laminated sheet materials.

  In the present invention, additional marking data for only the missing part is generated, and at least one sheet material is additionally extended. If the cutting machine in the subsequent process cuts according to the additional marking data, the missing parts can be replenished. There is little loss of sheet material, and incompletely shaped parts do not occur. For this reason, the process in a post process is easy.

  Preferably, the additional marking data generating means generates additional marking data so as to avoid the drawbacks. Since the additional marking data for at least one sheet material is generated, the additional marking data can avoid drawbacks. For this reason, even if the sheet material is added and the additional marking data is generated, the missing parts are not left.

  Preferably, the discriminating means is configured not to discriminate a part having a defect in the seam allowance of the part and having no defect inside the seam allowance as an insufficient part. Since it is possible to reduce the number of parts to be identified as insufficient parts and to have a defect in the sewing allowance area, the defects do not appear when the cut parts are sewn.

  Preferably, when a single layered product obtained by laminating a plurality of layers of sheet material includes a missing part, additional marking data is generated, and at least one sheet material is added to extend the sheet. Since additional marking data is generated for each laminated body in which the missing parts are generated and additional reversal is performed, it is easy to sort the parts cut by the additional marking data.

  Preferably, when the insufficient parts are accumulated until a predetermined condition is satisfied, additional marking data is generated, and at least one sheet material is added to extend the sheet. The predetermined condition is preferably based on the number of laminates, the total number of missing parts, and the total area of missing parts. Generate additional marking data when any of the number of laminates, total number, or total area reaches the threshold, generate additional marking data when two or more of these reach the threshold, or other processing But it ’s okay. Since additional marking data is generated collectively for a plurality of laminates, loss of the sheet material can be minimized. Further, since additional cutting is performed when insufficient parts are accumulated until a predetermined condition is satisfied, the number of additional cuttings can be reduced and efficiency is improved.

The figure which shows the hardware constitutions of the unfolding system of an Example The figure which shows the control system of the unfolding system of an Example Schematic diagram of marking data and additional marking data of the example The flowchart which shows the algorithm of the additional spread in the Example

  In the following, an optimum embodiment for carrying out the invention will be shown.

  FIG. 1 shows an embodiment of the unfolding system 2, and 4 is a unfolding machine. The extending means 6 feeds the sheet material 9 onto the extending table 17 of the spreader 4, cuts it at a predetermined length and stacks it. The extending means 6 recognizes a defect of the sheet material 9 by a recognition means 10 such as a line sensor. The extending means 6 further includes an origin mark applying means 12 and a cutter 14, and the origin mark applying means 12 applies an origin label at a predetermined position. The origin mark may be attached by an operator on the laminate that has been manually extended. Alternatively, the origin mark may not be used.

  The cutter 14 reciprocates in the width direction (y direction) of the spreader 4 and cuts the sheet material 9 at a predetermined position. The labeler 16 reciprocates in the y-direction in the extending means 6 and affixes a label such as a part ID on the sheet material that has been additionally extended to compensate for the missing parts. The labeler 16 may be separate from the spreading means, or may be movable in both directions of xy. Instead of using the labeler 16, the ID of a missing part or the like may be projected to a worker by a projector on a sheet material that has been additionally cut on a cutting machine 20 described later. Further, the labeler 16 or the projector may not be provided, and the additional marking data added with the missing part ID or the like may be output from the printer.

  In the spreader 4, the sheet material 9 from the raw roll 8 is fed out by the spreader 6, and the spreader 6 reciprocates in the conveying direction of the spreader 4 (the x direction in the drawing), The sheet material 9 is drawn out by the length and cut by the cutter 14 to obtain a laminated body 18 in which the sheet materials 9 are stacked. The thickness of the laminated body 18 is about 100 mm at the maximum, for example. The x direction is the length direction of the sheet material, and the y direction is the width direction of the sheet material.

  A cutter 20 is preferably connected to the spreader 4, and the laminate 18 is conveyed from the spreader 4 to the cutter 20 by the conveyor of the spreader table 17 and the conveyor of the cutter table 21. The cutting machine 20 may or may not be part of the unfolding system 2.

  The cutting head 22 includes a blade 24 and a camera 26 for recognizing the origin mark, which moves on the cutting table 21 along the y direction and the x direction in the drawing. Then, by recognizing the origin mark by the camera 26, the origin position with respect to the laminate 18 and the additional and extended sheet material cutting machine 20 is recognized. When there is no origin mark, the tip position of the laminated body 18 may be obtained by the camera 26 or the like. Marking data for cutting the laminated body 18 is supplied to the cutting machine 20, and parts are cut by cutting the laminated body 18 according to the marking data and the additional marking data with the blade 24.

  FIG. 2 shows a control system of the unfolding system 2. The marking data generating means 40 generates marking data for the laminated body 18 and the marking data includes the seam allowance of the part inside the part, but there may be no seam allowance. Further, the marking data generating means 40 may be provided in the unfolding system 2, or may be provided in the cutting machine 20, or may be provided in a computer other than these.

  The recognizing means 10 is composed of, for example, a line sensor, and detects a scratch tape attached to the sheet material 9 to recognize the position and range of the defect. The recognition of the defect of the sheet material 9 is not limited to the detection of the scratch tape by the line sensor, but the defect may be directly recognized by, for example, image recognition.

  The position and range of the defect recognized by the recognition means 10 are input to the determination means 42 and compared with the marking data. If the defect extends inside the part seam allowance, that is, if the defect extends inside from the contour of the marking data to a distance equal to or greater than the seam allowance, it is determined as a missing part. When the seam allowance is not included in the inside of the part in the marking data, if the defect extends to the inside of the part in the marking data, it is determined as a missing part.

  The discriminating means 42 outputs to the storage means 44 the ID of the missing part and the number of sheets of the sheet material in the laminate 18 that have the missing part. The part ID is, for example, a part number. Then, the storage means 44 lists and stores data on the ID of the missing part and the number of sheets of the missing material. However, it is not necessary to memorize how many layers of the sheet material are insufficient.

  Additional marking data is generated by the additional marking data generation means 46 for each stacked body 18 or whenever the missing parts are accumulated until a predetermined condition is satisfied. The additional marking data generation unit 46 may be the same as the marking data generation unit 40. Even if the additional marking data is extended, the recognition means 10 recognizes the defect, and the discrimination means 42 compares the additional marking data with the position and range of the defect. Is output to the additional marking data generating means 46. In response to this, the additional marking data generating means 46 generates additional marking data. If the additional marking data is generated after the position information of the defect is obtained first, the additional marking data need not be changed.

  The controller 48 controls the extending means 6 according to the additional marking data, and additionally extends the sheet material 9. Even in the additional extension, the defect is monitored by the recognizing means 10, and the additional marking data is corrected when the defect extends inside the seam allowance of the part. The labeler 16 attaches a label to the part with the additional marking data, and the origin mark applying means 12 attaches the origin mark. If additional marking data is first generated based on the missing parts, and the sheet material for the additional marking data is stretched and cut, if the defect is detected and the marking data is regenerated when the sheet is stretched, The length may be insufficient. Therefore, preferably, additional marking data is generated while the sheet material is stretched, and the sheet material is cut after it is determined that the part fits in the sheet material.

  In FIG. 3, the marking data 60 and the additional marking data 62, the laminated body 18, and the additional sheet | seat 63 are shown typically. Reference numeral 64 denotes an origin mark, and 66 denotes a label. The origin mark and the label 66 are given to these positions. The mark 64 and the label 66 are not part of the additional marking data. The label 66 may be attached to the outside of the part of the additional sheet 63 or may be attached to the inside of the part. The additional sheet 63 is at least one sheet that extends in correspondence with the additional marking data 62.

  Many parts are arranged in the marking data 60, and the origin position is designated by the origin mark 64. With the origin mark 64, the position on the sheet material and the position on the marking data correspond to each other so that it is possible to determine whether a defect of the sheet material overlaps with a part and which part becomes a missing part when overlapping. Instead of pasting the origin mark 64, the vertex position of the sheet material may be detected by a line sensor or image recognition or the like, and the position shifted from the vertex position to the inside of the sheet material by a predetermined distance in a predetermined direction may be used as the origin. .

  A plurality of sheet materials 9 are laminated on one laminated body 18, and the additional marking data 62 is obtained by collecting and marking missing parts caused by the defects of the sheet material. The additional marking data 62 may be generated for each stacked body 18 or generated each time a defect in the multiple stacked bodies 18 satisfies a predetermined condition. In FIG. 3, additional marking data 62 is arranged so as to supplement five missing parts.

  FIG. 4 shows a one-time stacking algorithm and an additional spreading algorithm. The one-time stacking algorithm is an algorithm for forming the stacked body 18, and the controller drives the spreader, feeds and cuts the sheet material by a predetermined length, and stacks a plurality of sheet materials (step S1). The position and range of the defect of the sheet material are recognized by the recognition unit (step S2) and input to the determination unit. The determining means compares the marking data with the position and range of the defect, and determines whether or not the defect appears inside the seam allowance of the part (step S3). And parts that show defects on the inner side of the seam allowance for parts become insufficient parts. In order to replenish the missing parts, the missing part ID and the layer number in the laminate are sequentially stored in the storage means, and the memory is accumulated for each missing part (step S4). However, when the scratch tape is affixed, it can be recognized that the part is a missing part, so the layer number of the missing part does not have to be stored, and the ID of the missing part does not need to be affixed with a label.

  The algorithm for additional roll-up differs depending on whether the additional sheet is rolled up for each laminate, or whether waiting for the accumulation of insufficient parts until a predetermined condition is satisfied. In FIG. 4, this process is shown as step S <b> 5, but whether or not the additional roll is repeated for each laminate is fixed for each spread system, and step S <b> 5 may be omitted. The additional spreading conditions include, for example, the number of missing parts, the number of stacked bodies in which the missing parts are generated, the total area of the missing parts, and the like. Then, in step S6, it is determined whether or not the condition for additional extension is satisfied. If satisfied, the process proceeds to step S7. In addition, in the case of additional rolling for each stacked body, if there are insufficient parts in the stacked body, the process proceeds to step S7. If the additional extension condition is not satisfied in step S6, the process returns from the connector A to one stack.

  In step S7, additional marking data is generated for the missing part to be subjected to the additional roll. The additional marking data is generated so that the missing parts can be arranged on the shortest sheet material while taking into consideration the directionality of the sheet material, pattern matching, and the like. Then, step S1 and step S2 are executed for the additional extension, and in step S3, it is compared with the additional marking data instead of the normal marking data, and it is determined whether or not there is a missing part. In step S8, processing is performed in the case where a missing part is generated. In this case, the additional marking data is changed so that the defect does not appear inside the marking data. Note that Steps 7 to 8 may be changed so as to generate additional marking data while additionally extending. In step S9, the origin mark and the label are pasted, and the sheet material is extended by the required length to form an additional sheet. The length along the conveyance direction of the additional sheet is shorter than the length of the laminated body, and is a minimum length in which additional marking data can be arranged.

The embodiment has the following characteristics.
(1) Loss of sheet material can be minimized by adding and extending multiple additional parts at once.
(2) Since it is a missing part only when the defect extends inside the seam allowance, it is not affected by the defect that does not appear on the part surface.
(3) Since the origin mark is also given to the additional sheet, it is possible to determine whether the defect extends inside the part in the additional marking data.
(4) Attach the label of the additional sheet part that describes the part ID and the number of layers in the laminate. This makes it easy to know which parts will be refilled. The projector can perform the same display, and the printer may output similar data.
(5) From the additional sheet, there will be no parts other than parts to make up for the shortage, and there will be no parts with incomplete shapes.
(6) If additional rolls are made for each laminate including missing parts, the missing parts can be replenished immediately in the subsequent process.
(7) Loss of sheet material is minimized if additional stretching is performed when insufficient parts are accumulated until a predetermined condition is satisfied. In addition, the number of additional cuttings can be reduced, which is efficient.

2 Unfolding system 4 Unfolding machine 6 Unfolding means 8 Original fabric roll 9 Sheet material 10 Recognizing means 12 Origin mark providing means 14 Cutter 16 Labeler 17 Unfolding table 18 Laminate 20 Cutting machine 21 Cutting table 22 Cutting head 24 Cutting tool 26 Camera 40 Marking data generating means 42 Discriminating means 44 Storage means 46 Additional marking data generating means 48 Controller 60 Marking data 62 Additional marking data 63 Additional sheet 64 Origin mark 66 Label

Claims (6)

A spread system that controls the spread means by a controller and laminates a plurality of sheet materials,
A recognition means for recognizing the defects of the sheet material to be laminated,
A discrimination means for comparing the marking data and the position of the defect recognized by the recognition means, and determining a part including the defect as a missing part,
Storage means for storing data for identifying missing parts and the number of missing parts;
An additional marking data generating means for generating additional marking data in which an additional part consisting only of the stored missing parts is marked;
The controller is configured to add and extend at least one sheet material having a length corresponding to additional marking data to the extending means separately from the laminated sheet material.   The spread marking system according to claim 1, wherein the additional marking data generating means generates additional marking data so as to avoid a defect.   3. The spread system according to claim 1, wherein the discriminating means is configured not to discriminate a part having a defect in a seam allowance of a part and having no defect inside the seam allowance as an insufficient part. .   When the laminated body for one time in which a plurality of sheet materials are laminated includes a missing part, additional marking data is generated, and at least one sheet material is added to extend the sheet material. Item 5. The spread system according to any one of Items 1 to 3.   When the insufficient parts are accumulated until a predetermined condition is satisfied, additional marking data is generated, and at least one sheet material is added to extend the sheet, and the sheet is extended. Any one anti-rolling system. By controlling the extending means by a controller, it is an extending method for laminating a plurality of sheet materials,
Recognizing a defect of the sheet material to be laminated by a recognition means;
Comparing the position of the recognized defect with the marking data, and determining the part including the defect as a missing part by the determining means;
Storing the data for specifying the missing parts and the number thereof by the storage means;
Generating additional marking data by marking an additional part consisting of only the stored missing parts by means of additional marking data generating means;
And a step of adding and extending at least one sheet material having a length corresponding to additional marking data separately from the laminated sheet material and controlling the means for extending by the controller. .